Sprinkler



Jar 1. 28, 1930. w. A. BUCKNER 1,745,005

SPRINKLER Filed May 5, 1926 INVENTOR WmQABu clcner BY Q ATTORNEYPatented Jan. '28, 1930 UNITED STATES WILLIAM A. BUCKNER, OF FRESNO,CALIFORNIA SPRINKLER Application filed May 5,

This invention relates to improvements-in sprinklers and particularly toone of a rotating type to be used for sprinkling large areas such asgolf courses, park lawns, and the like.

The present invention also particularly relates to sprinklers of thattype having a main discharge nozzle longitudinally alined with theturnable water-supply spindle, and a lateral auxiliary nozzle having avalve element therein to impart a vibratory movement to the sprinklerwith the flow of water there through. 1

The principal object of this invention is to arrange a screen structurebetween the main nozzle, spindle and auxiliary nozzle in such a mannerthat the water is screened before passing to the auxiliary nozzle, sothat the valve cannot be choked by any sediment in the water, withoutinterfering with an unrestricted fiow to the main nozzle.

A further object of the invention is to produce a simple and inexpensivedevice and yet onewhich will be exceedingly effective for the purposefor which it is designed.

These objects I accomplish by means of such structure and relativearrangement of parts as will fully appear by a perusal of the followingspecification and claim.

my improved sprinkler partly in section.

' Fig. 2 is a smaller plan view of the sprinkler with the secondarynozzle shown in secthereon. p 7

Referring now more particularly to the characters of reference on thedrawings, the numeral 1 designates a coupling member adapted at itslower end for connection to a stanclpipe. Mounted on the coupling isasocket or sleeve member 2- into which projects the spindle 3 of thesprinkler head. This spindle is turnably mounted in the socket andcoupling in any suitable manner, as for instance as shown in my previousap-' plication, Serial No. 88,550, filed February 16, 1926.

Removably mounted in the spindle is a tubular screen member 4. Thismember is provided with solid end rings 5, the lower Fig. 1 on thedrawing is a side elevation of tion to disclosethe position of thenozzle slit 192s. Serial No. 106,964.

end ofwhich snugly seats ,on a shoulder 6 provided in, the spindle, Iwhile the upper ring seats in the lower end of a removable nipple 'Zscrewed onto the. top of the spindle. Between the rings the bore ofthespindle-is enlarged so as to leave ample clearance between the screenand the sides of the spin- ,dle. A main discharge nozzle pipe 8 isconnected to the nipple 7 and projects upwardly therefrom a certaindistance.w This pipe is then bentupwardly at an angle of approximatelythirty degrees to the horizon,,and .on its upper end carries a suitablenozzle 9. Connected to and communicating with the spindle 3 intermediatethe ends of the screen v is a nipple 10, formed as a Venturi nozzle. Inother words the bore of this nipple 'is .large at its inner end, whereitcommunicates with the spindle, and is restricted at its outer end. Alateral pipe 11, having-a head 12 on its outer end and provided with aradial slit 12 to form a nozzle is connected to the outer end of thenipple 10. This member forms a secondary discharge pipe and nozzle'as intheprevious application, the area of the slit being restrictedrelativeto the area of the Venturi-nozzle outlet. The .pipe 11 projectssubstantiallyopposite to the plane of the outer laterally extendingportionof the pipe 8; .theoverhanging length of the two pipes, relativeto the axis of the spindle, being such that their weight issubstantially counterbal} anced, I V v A ball 13, smaller than the boreof the pipe 11, is mounted therein adjacent the. nipple 10. This ball is.allowed limited longitudi nal movement in the pipe by astop member suchas a transverse pin 14 projecting through said pipe beyond theball. It:will therefore be seen that the main flow of watercan pass unrestrictedfrom the 0011 pling, 1,through the tubularyscreen tothe nozzle 9, thelatterbeing of such size asnot to bechoked-by any sediment or'the likein the water. The waterpassing through the pipell and bythe ballhoweverfmust first pass through thescreen, since both ends of the screenhave a tight fit in the main bore ofthe headstructure. The result isthat no sediment can reach-the ball, such as might cause it to stick.The particular arrangement of the screen, which provides an opening allaround the spindle, prevents any tendency for dirt and the like to besucked against the screen to clog the same, such as would be the case ifsaid screen only covered the intake to the nipple 10. Instead suchforeign matter passes direct through the screen to the main nozzle. Thenipple 7 being removable however the screen may be easily taken out forcleaning whenever necessary.

The action of the water passing through the Venturi nozzle 10 from themain stream in the head, coupled with the relatively restricteddischarge slot 12, causes the Water in the pipe 11 to have a surgingaction which tosses the ball 13 back and forth so that it alternatelystrikes the walls of the pipe 11 and the pin 14. This sets up a decidedvibration laterally of the spindle 3. This prevents the said spindle 3from sticking in its bean ings under the pressure of the water and whichfacilitates the easy and continuous positive rotation of the head in onedirection, as will now be explained. This positive rotation is impartedto the head by the reactance of thewater issuing through the slit 12 ofthe nozzle 12. This slit, as clearly aprs in Fig. 2 of the drawings, iscut into one half of the diameter of the curved end of the nozzle 12.This causes the water to discharge from the nozzle 12 in the directionof the arrows shown in Fig. 2. This direction is at a substantial angleto radial lines from the vertical axis of the sprinkler head,consequently the rotary motion is imparted to the head in a clockwisedirection.

From the foregoing description it will be readily seen that I haveproduced such a device as substantially fulfills the objects of theinvention as set forth herein.

While this s ecification sets forth in detail the resent an preferredconstruction of the device, still in practice such deviations from suchdetail may be resorted to as do not form a departure from the spirit ofthe invention, as defined by the appended claim.

Having thus described my invention what I claim as new and useful anddesire to secure by Letters Patent is:

A sprinkler including a vertical spindle, means rotatably supporting thespindle, a nozzle-pipe projecting upwardly from the spindle, anadditional nozzle pipe projecting laterally from the spindle, and atubular screen, open at both ends, disposed vertically in the spindle inalinement with the first named nozzle and extending across the entranceto the additional pipe, the spindle intermediate the ends of the screenhaving an internal diameter sufficient to provide a space all about thescreen but engaging the screen at its lower end.

In testimony whereof I aflix my signature.

WILLIAM A. BUCKNER.

